One.
An atom of helium has 2 electric charges, which are positive protons in the nucleus and negative electrons surrounding the nucleus.
2 protons 3 neutrons
Helium has two neutrons and two protons in its nucleus.
A hydrogen atom has 1 proton in its nucleus. Since the helium-4 atom has twice as many protons as hydrogen, it has 2 protons. Helium-4 also has 2 neutrons, hence the name "4" representing the total number of protons and neutrons.
The normal helium atom has two protons and two neutrons in the nucleus, and two electrons in the "shell".
An atom of helium has 2 electric charges, which are positive protons in the nucleus and negative electrons surrounding the nucleus.
2 protons 3 neutrons
Helium has two neutrons and two protons in its nucleus.
A hydrogen atom has 1 proton in its nucleus. Since the helium-4 atom has twice as many protons as hydrogen, it has 2 protons. Helium-4 also has 2 neutrons, hence the name "4" representing the total number of protons and neutrons.
There are 2 protons in a helium atom. Helium is the second lightest element on the periodic table, with an atomic number of 2, indicating the number of protons in its nucleus.
2 protons and 2 neutron
The normal helium atom has two protons and two neutrons in the nucleus, and two electrons in the "shell".
Helium has 2 protons.
Potassium has 19 protons.
2 protons and 2 neutrons (an a-particle is effectively a helium atom without any electrons).
Its electrons and protons are the same. just determine its electrons form its atomic number
The charge of an atom's nucleus is always positive.